Ensemble modem structure for imperfect transmission media

Details Ensemble modem structure for imperfect transmission media Ensemble modem structure for imperfect transmission media

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H04M 11/00 (2006.01) H04B 1/10 (2006.01) H04B 15/00 (2006.01) H04L 1/00 (2006.01) H04L 1/20 (2006.01) H04L 5/00 (2006.01) H04L 5/16 (2006.01) H04L 27/26 (2006.01)

Patent

CA 1251586

ENSEMBLE MODEM STRUCTURE FOR IMPERFECT TRANSMISSION MEDIA ABSTRACT OF THE DISCLOSURE A high-speed modem that transmits and receives digital data on an ensemble of carrier frequencies span- ning the usable band of a dial-up telephone line. The modem includes a system for variably allocating data and power among the carriers to compensate for equivalent noise and to maximize the data rate. Additionally, sys- tems for eliminating the need for an equalization network, for adaptively allocating control of a channel, and for tracking variations in line parameters are disclosed.

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